DeDietrich AWHP 4 MR User Manual page 46

8 Troubleshooting
Code Message Description
B10 PSU Internal error
B11 AWAITING The hybrid system has not
CONFIGU­ been configured
RATION
NUMBER
B13 DHW T Bottom domestic hot water
OPEN temperature sensor defec­
tive
B14 DHW T Bottom domestic hot water
CLOSED temperature sensor defec­
tive
B18 RESET Reset under way
RUNNING
B19 HEAT Heat pump flow temperature
PUMP FL T sensor defective
OPEN
B20 HEAT PUMP Heat pump flow temperature
FL T sensor defective
CLOSED
B24 SYSTEM Insufficient flow rate
FLOW RATE
ERROR
B26 FL T OPEN Hybrid system flow sensor
defective
B27 FL T Hybrid system flow sensor
CLOSED defective
B29 OUTSIDE T Outside temperature sensor
OPEN defective
B30 OUTSIDE T Outside temperature sensor
CLOSED defective
B33 HEAT PUMP Heat pump return tempera­
RET T ture sensor defective
OPEN
B34 HEAT PUMP Heat pump return tempera­
RET T ture sensor defective
CLOSED
B37 TOP DHW S Top domestic hot water
OPEN temperature sensor defec­
tive
B38 TOP DHW S Top domestic hot water
CLOSED temperature sensor defec­
tive
B42 WATER Pressure lower than the
PRESSURE minimum pressure
ERROR
B43 HEAT PUMP Heat pump outdoor unit de­
FAULT fective.
B44 FUNCTION­ No communication with the
AL DEVICE PCB SMS-04
DISCON­
NECTED
B45 NON-CRITI­ No communication with the
CAL DEVICE PCB SMS-04
DISCON­
NECTED
46 MIV-4
Check
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
Contact the professional responsible for maintenance of the heat pump
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